10.1007/s40096-022-00504-x

The application of fuzzy transform method to the initial value problems of linear differential–algebraic equations

  1. Department of Applied Mathematics, Faculty of Mathematical Science, University of Tabriz, Tabriz, IR

Published in Issue 2022-12-30

How to Cite

Mirzajani, S., Bahrami, F., & Shahmorad, S. (2022). The application of fuzzy transform method to the initial value problems of linear differential–algebraic equations. Mathematical Sciences, 18(2 (June 2024). https://doi.org/10.1007/s40096-022-00504-x

Abstract

Abstract In this study, we propose a method based on the direct and inverse fuzzy transforms ( F\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathcal {F}}$$\end{document} -transforms) to approximate solutions of the system of linear differential–algebraic equations. We obtain an analytical solution to the initial value problem in terms of basic functions using this method. Since the basic functions have compact support, by employing fuzzy transform to the problem, we obtain the system of linear algebraic equations with lower Hessenberg coefficient matrix. We discuss the solvability of this system and give the error analysis using the consistency of the initial value. We present several examples to illustrate the efficiency and the performance of this new method.

Keywords

  • Linear differential–algebraic equations,
  • Fuzzy partition,
  • F\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\mathcal {F}}$$\end{document}-transforms

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